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Solution


Q.

Consider the ground state of chromium atom (Z = 24). How many electrons are with Azimuthal quantum number l=1 and l=2 respectively          [2025]
1 12 and 4  
2 16 and 4  
3 12 and 5  
4 16 and 5  

Ans.

(3)

Cr24=1s2, 2s2, 2p6 (l=1), 3s2, 3p6 (l=1), 3d5 (l=2), 4s1 Electrons with l=1 are 12 and electrons with l=2 are 5.